黑客利用数量庞大缺乏资安防护的设备，对特定网络进行「分散性阻断服务攻击(Distributed Denial of Services，DDoS)，进行网络勒索。
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It also offers a range of security services, including managed DNS, Distributed Denial of Service (DDoS) mitigation and cyber-threat reporting.
FORBES: VeriSign's Future Looks Stable with .com and.net Registries in the Bag
The recent rash of distributed denial-of-service attacks on large American banks has disrupted the delivery of banking services to consumer and commercial customers over the Internet for hours at a time.
FORBES: Beware The Hacker's Surprising Secret Ally: Your Aunt Sally
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